Answer:
the angle measures 85 degrees
5/8 or 62.5%
Step-by-step explanation:
There are a total of 8 pairs of socks and 5 black ones, so the ratio is 5/8. We can divide this and get the percent by 5/8=0.625 and multiply by 100% which equals 62.5%.
b = 30
1/4 (8b-80) +b = 70
2b - 20 + b = 70
3b = 90
